TODAY SEP22
TEMPERATURE60
HUMIDITY68
PRESSURE29.88
WIND COND.232 2
  • 5841Sun
  • 6340Mon
  • 6842Tue
  • 7243Wed
  • 7244Thu
daynightWeather update from CW0750 Cle Elum at
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Roslyn Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January23°F33°F27°F12.2"
February26°F35°F30°F7.2"
March29°F39°F33°F11.1"
April32°F46°F37°F6.3"
May39°F55°F45°F5.8"
June43°F60°F49°F4.4"
July49°F70°F57°F1.2"
August51°F70°F58°F1.5"
September46°F63°F52°F4.1"
October38°F50°F42°F9.1"
November30°F37°F33°F14.5"
December23°F31°F26°F12.2"

Did you know?

  • The highest monthly average temperature in Roslyn for August is 58 degrees.
  • The lowest monthly average temperature in Roslyn for December is 26 degrees.
  • The most monthly precipitation in Roslyn occurs in November with 14.5 inches.
  • The air quality index in Roslyn is 63% better than the national average.
  • The pollution index in Roslyn is 91% better than the national average.

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Compare Roslyn, WA Weather To Other Cities

Roslyn air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexRoslynWashingtonNational
Air quality index183650
Pollution index422,6268,596,9895,066,862

Roslyn air quality information

MeasurementTotal
Days measured342
Days with good air quality286
Days with moderate air quality56
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Roslyn air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.000%

Average monthly Roslyn temperature with heat index

Roslyn monthly precipitation with daily maximum

Roslyn monthly snow depth with daily maximum

Roslyn monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
South Cle Elum, WA5241864%
Cle Elum, WA2,5801864%
Easton, WA3771864%
Ronald, WA2451864%
Roslyn, WA7881864%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Danville, WV7883432%
Plain, WI7883628%
Vermont, IL788484%
Browerville, MN7882942%
Lake Tomahawk, OH788688%
Roslyn, WA7881864%
Source: The Roslyn, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.